Tailoring stacking fault energy for high ductility and high strength in ultrafine grained Cu and its alloy

Y. H. Zhao, Y. T. Zhu, X. Z. Liao, Z. Horita, T. G. Langdon

    研究成果: ジャーナルへの寄稿学術誌査読

    296 被引用数 (Scopus)

    抄録

    Bulk ultrafine grained (UFG) materials produced by severe plastic deformation often have low ductility. Here the authors report that simultaneous increases in ductility and strength can be achieved by tailoring the stacking fault energy (SFE) via alloying. Specifically, UFG bronze (Cu 10 wt. % Zn) with a SFE of 35 mJ/m 2 was found to have much higher strength and ductility than UFG copper with a SFE of 78 mJ/m 2. Accumulations of both twins and dislocations during tensile testing play a significant role in enhancing the ductility of the UFG bronze. This work demonstrates a strategy for designing UFG alloys with superior mechanical properties.

    本文言語英語
    論文番号121906
    ジャーナルApplied Physics Letters
    89
    12
    DOI
    出版ステータス出版済み - 2006

    !!!All Science Journal Classification (ASJC) codes

    • 物理学および天文学(その他)

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